IC manufacturers STMicroelectronics

IC manufacturers (103)

STMicroelectronics L99BM114 | Demoboard STEVAL-BMS114

Overview

TopologyBattery Management System
IC revision1.0

Description

The STEVAL-BMS114 is a battery management system (BMS) evaluation board that can handle from 1 to 31 Li-ion battery nodes. Each battery node manages from 4 to 14 battery cells, for a voltage range between 48 V and 800 V.The board is based on the L99BM114, a multicell battery monitoring and balancing IC, used in transportation and industrial application.The main activity of the L99BM114 is monitoring cells and battery node status through stack voltage measurement, cell voltage measurement, temperature measurement, and coulomb counting. Measurement and diagnostic tasks can be executed either on demand or periodically, with a programmable cycle interval. Measurement data are available for an external microcontroller to perform charge balancing and to compute the state of charge (SOC) and the state of health (SOH).The main functions of a standard BMS are monitoring and protecting the battery pack.The monitoring function is related to the measurement of the battery current, voltage, and temperature. The protection function brings the system to a safety state in case of under or overvoltage and overheating.The STEVAL-BMS114 provides an elaborate monitoring network to sense the voltage, current, and temperature of each cell.The STEVAL-BMS114 can work in two different daisy chain topologies: single access and dual access ring.In a single access daisy chain configuration, a series of AFE is connected to an MCU board through a single transceiver connected to the STEVAL-BMS114 isolated ISOLport. The AFE are connected to each other through the isolated ISOH port.The MCU communicates with the STEVAL-BMS1T hosted L99BM1T transceiver through the SPI protocol. The transceiver converts these signals into ISO SPI signals to communicate with the BMS.The STEVAL-BMS1T allows converting SPI signals into isolated SPI signals, thus reducing the number of necessary wires from 4 to 2 and implementing differential communication for higher noise immunity.

Features

Hosts the L99BM114 multicell battery monitoring and balancing ICVoltage monitoring of every single cell and of the entire battery nodeVoltage, current, and temperature sensing of each cell5 GPIOs to connect temperature sensors as NTCsAn NTC hosted on the L99BM114 to sense the chip temperaturePassive balancingCompact size: 100 mm x 76 mm

Typical applications

  • Energy generation and distribution

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
Pitch
(mm)
MountIR
(A)
Working Voltage
(V (AC))
PCB/Cable/PanelContact Resistance
(mΩ)
Tol. RL
(mm)
Stranded Wire Section (AWG)Stranded Wire Section (Metric)Qty.
(pcs)
CTol. CVR
(V (DC))
SizeOperating TemperatureQ
(%)
DF
(%)
RISOCeramic TypeW
(mm)
Fl
(mm)
SW
(mm)
TiFlammability RatingApplicationInterface TypePins
(pcs)
RowsH
(mm)
GenderTypeIR
(A)
PackagingColor Samples
150080GS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 525 Green 515 450 3.2 InGaN 140 SMT 2 4000 0805 -40 °C up to +85 °C 1.25 0.7 Tape and Reel
885012006053SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400022 pF ±5% 50 0603 -55 °C up to +125 °C 84010 GΩ NP0 Class I 0.8 0.4 0.8 7" Tape & Reel
885012006054SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400033 pF ±5% 50 0603 -55 °C up to +125 °C 100010 GΩ NP0 Class I 0.8 0.4 0.8 7" Tape & Reel
885012206085SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 40002.2 nF ±10% 50 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206087SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 40004.7 nF ±10% 50 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206088SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 40006.8 nF ±10% 50 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206089SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400010 nF ±10% 50 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206093SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400047 nF ±10% 50 0603 -55 °C up to +125 °C 310 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206094SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400068 nF ±10% 50 0603 -55 °C up to +125 °C 37.4 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206095SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 4000100 nF ±10% 50 0603 -55 °C up to +125 °C 35 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012207079SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC) 2 30002.2 µF ±10% 25 0805 -55 °C up to +125 °C 100.05 GΩ X7R Class II 1.25 0.5 1.25 7" Tape & Reel
885012207103SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 2 30001 µF ±10% 50 0805 -55 °C up to +125 °C 100.1 GΩ X7R Class II 1.25 0.5 1.25 7" Tape & Reel
885012208094SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 3.2 20004.7 µF ±10% 50 1206 -55 °C up to +125 °C 100.02 GΩ X7R Class II 1.6 0.5 1.6 7" Tape & Reel
624030213322SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.00 mm Female Dual Row Terminal Housing w. positive locking 2 Cable 33.4 -25 °C up to +85 °C1000 MΩ 30 Female Terminal Housing Bag
62403021722SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.00 mm Male Dual Row Horizontal Shrouded Header w. positive locking 2 THT 3 250 PCB 20 max. 33.4 -25 °C up to +85 °C1000 MΩ 30 Male Horizontal 3 Tube White
970080365SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WA-SPAII Plastic Spacer Stud, metric, internal/ internal 8 -30 °C up to +110 °C 6 M3 UL94 HB Bag Black
62400113722SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.00 mm Female Dual Row Crimp Contact 2 3 250 Cable 20 max. 28 to 22 (AWG) 0.081 to 0.326 (mm²) 10000 -25 °C up to +85 °C Female Crimp Terminal 3 Big Reel
60900213421SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point 2.54 250 20 max. 2.44 -40 °C up to +125 °C1000 MΩ 1 Jumper 3 Bag Black
61300211121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Pin Header 2.54 THT 250 20 max. 5.08 -40 °C up to +105 °C1000 MΩ 2 Single Pin Header Straight 3 Bag
61300311121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Pin Header 2.54 THT 250 20 max. 7.62 -40 °C up to +105 °C1000 MΩ 3 Single Pin Header Straight 3 Bag
61400416021SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-COM USB 2.0 Type A Horizontal THT 1.5 30 20 max. -40 °C up to +105 °C1000 MΩ USB 2.0 Type A 4 Receptacle Horizontal 1.5 Tray White
885012206102SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 100 V(DC) 1.6 4000100 pF ±10% 100 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206120SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 100 V(DC) 1.6100 nF ±10% 100 0603 -55 °C up to +125 °C 51 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012209073SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 3.210 µF ±10% 50 1210 -55 °C up to +125 °C 100.01 GΩ X7R Class II 2.5 0.6 2.5 7" Tape & Reel
885012209071SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 100 V(DC) 3.22.2 µF ±10% 100 1210 -55 °C up to +125 °C 50.05 GΩ X7R Class II 2.5 0.75 2.5 7" Tape & Reel
97790403111SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WA-SCRW Pan Head Screw w. cross slot M3 4 2000 -30 °C up to +85 °C UL94 V-2 Bulk Natural
885012206125SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6220 nF ±5% 50 0603 -55 °C up to +125 °C 102.3 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
Pitch
(mm)
MountIR
(A)
Working Voltage
(V (AC))
PCB/Cable/PanelContact Resistance
(mΩ)
Tol. RL
(mm)
Stranded Wire Section (AWG)Stranded Wire Section (Metric)Qty.
(pcs)
CTol. CVR
(V (DC))
SizeOperating TemperatureQ
(%)
DF
(%)
RISOCeramic TypeW
(mm)
Fl
(mm)
SW
(mm)
TiFlammability RatingApplicationInterface TypePins
(pcs)
RowsH
(mm)
GenderTypeIR
(A)
PackagingColor Samples